Features:1.Bluetooth version 2.1 + EDR, data transmission speed can reach 3Mbite / S2.Hands free calling function, can make / answer phone calls easily3.Bluetooth function to pair to any device with Bluetooth enable4.support music from Micro SD card5.Support music from USB6.Support FM radio function7.Line in function for wired connection to devices without Bluetooth8.Built in rechargeable lithium battery.9.360 degree led light with several color models10.Bluetooth range above 10 meters11.Music volume can be controlled with long push of the button12.The first / Next song can be controlled with short push of the button13.Real voice prompt like "the Bluetooth device is ready to pair" and so on14.Memory function for Power cut when playing Micro-SD card15.Various colors are available16. Attractive design and perfect voice effect to fulfill your market